






🛡️ Seal the deal with Flex Seal – your ultimate waterproof armor!
Flex Seal LiquidRubber Coating is a 16 oz industrial-grade, black liquid rubber sealant that provides a flexible, breathable, and UV resistant waterproof barrier. Designed for diverse surfaces including roofs, basements, RVs, and marine equipment, it prevents rust, corrosion, and moisture damage with easy application methods like brushing, rolling, dipping, or pouring.












| Material | Rubber |
| Brand | Flex Seal Liquid |
| Style | Industrial |
| Item Weight | 1 Pounds |
| Item dimensions L x W x H | 4 x 3.4 x 3.4 inches |
| Water Resistance Level | Waterproof |
| Item Form | Liquid |
| UPC | 853517006283 |
| Unit Count | 16.0 Fluid Ounces |
| Global Trade Identification Number | 00853517006283 |
| Number of Items | 1 |
| Color | Black |
| Surface Recommendation | Roof |
| Manufacturer | Swift Response, LLC |
| Part Number | LFSBLKR16 |
| Item Weight | 1 pounds |
| Product Dimensions | 4 x 3.4 x 3.4 inches |
| Item model number | LFSBLKR16 |
| Is Discontinued By Manufacturer | No |
| Size | 16-oz |
| Pattern | Rubber |
| Item Package Quantity | 1 |
| Included Components | 16oz Flex Seal Liquid |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 1 |
T**G
Love this stuff!!
Love this stuff! Was able to use it to help seal various different parts on my 69 Dodge Dart Project. Has a nice glossy texture and dries pretty quickly. Helps protect my components in my car and keeps them from cracking. It is a good texture for most any projects. I have used it on other applications too. It's nice that it's a versatile project that I can use for almost anything!
R**L
Seals well
Used it on the inside of an old electric coke cooler. Works great and still lets it stay cool inside.
L**Z
Product great, Amazon manhandling the box, not so much.
The product was great as usual, can't really beat this stuff. Amazon shipping.... We'll, that wasn't so great. If they would've tossed the box 1 more time, it probably would've spilled all over their truck. Do better.
A**A
Stopped leak
Had a leaking garden window. Painted flex seal inside and outside around frame. No more leak. Applied with disposable paint brush.
F**R
Worked great
This did what I expected. I have a 1976 Volkswagen Beetle convert. that I am fixing up. The rubber on the running boards was dried out and discolored, along with some splits in the rubber showing bare metal underneath. It was going to cost well over two hundred dollars each to replace them, so I thought I'd try Flex Seal. After cleaning and drying the running boards I applied the product with a small paintbrush. It went on easily,covered really well, and small "oops" we're easily wiped up with a cleaning cloth. I allowed a drying time of 24 hours and just now went out and filled in the split areas with a little more product and smoothed it out with the brush. It looks fantastic! I took a couple pictures which don't do it justice. It dried really shiny, and looks wet although it's dry and looks and feels like rubber. Some tips: I first stirred it very well because I could tell it was thick at the bottom of the can. It was easy to stir up though. When I was finished with the project yesterday, I replaced the can lid and tapped it on tightly. My brush I wanted to use again for today's touch up, so I sealed it in tin foil. When I opened the can again today it was ready to go but is tired it again anyway. There was no "skin" on top, and no lumps. My brush was only slightly stiff and I was able to use it again. I used about half a can of the product to do both running boards and am very pleased with how they look!
T**Y
Best product ever for water proofing and sound dampening on car
This stuff is amazing. I actually used it on the floorboard of my vintage VW and under fender wells. Very durable product and good sound dampening, I used paint brush and paint on very thick. Worked great and basically put a solid layer of rubber on my car for good protection from elements.
D**J
Dissatisfied harden up could not use
Harden up could not use
A**D
Ok
Works ok but if you lay a thin layer it will peel and come off easily
Trustpilot
5 days ago
4 days ago